'\" t
.\"     Title: dblink_cancel_query
.\"    Author: The PostgreSQL Global Development Group
.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
.\"      Date: 2011-12-01
.\"    Manual: PostgreSQL 9.1.2 Documentation
.\"    Source: PostgreSQL 9.1.2
.\"  Language: English
.\"
.TH "DBLINK_CANCEL_QUERY" "3" "2011-12-01" "PostgreSQL 9.1.2" "PostgreSQL 9.1.2 Documentation"
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.SH "NAME"
dblink_cancel_query \- cancels any active query on the named connection
.SH "SYNOPSIS"
.sp
.nf
dblink_cancel_query(text connname) returns text
.fi
.SH "DESCRIPTION"
.PP

\fBdblink_cancel_query\fR
attempts to cancel any query that is in progress on the named connection\&. Note that this is not certain to succeed (since, for example, the remote query might already have finished)\&. A cancel request simply improves the odds that the query will fail soon\&. You must still complete the normal query protocol, for example by calling
\fBdblink_get_result\fR\&.
.SH "ARGUMENTS"
.PP
\fIconname\fR
.RS 4
Name of the connection to use\&.
.RE
.SH "RETURN VALUE"
.PP
Returns
OK
if the cancel request has been sent, or the text of an error message on failure\&.
.SH "EXAMPLES"
.sp
.if n \{\
.RS 4
.\}
.nf
SELECT dblink_cancel_query(\*(Aqdtest1\*(Aq);
.fi
.if n \{\
.RE
.\}
